TECH QUESTIONS

AIR-LOCK Q&A

Air Lock FAQ’s

 

What material do you recommend for a check/test socket? Co-Poly, Vivak (in-house fitting only), or MPE

 

Is the Air Lock water resistant and is there any maintenance when used in water?

Yes. We recommend rinsing the lock and components when used in salt water, chlorine or an environment with dirt, sand, grit. *NOTE- A prosthetist may need to remove the lock mechanism and blow out the lock housing with an air hose.

 

Does patient need to use a sleeve with the Air Lock? No, there is no hole in the bottom of the Air Lock, so no air can get in once the limb is inserted. There may be rare occasions that a small amount of air “wicks” into the socket (limb shape, water sports, gymnastics) – in these cases a sleeve can be worn or add a CQL valve to auto expel the air.

 

What liners do you recommend for the Air Lock? Any liner that accepts a 10mm pin (6mm pins are also available).  Fabric or Non-Fabric Backed liners both work well.

What makes the Air-Lock “Heavy-Duty?” Using a Brass Pin – this is for active, heavier patients (350lb. capacity)

 

What are the Billing L-Codes for the Air Lock? L5671, *L5647, and *L5652

Please note:  The billing codes listed should not be construed as a guarantee for coverage or payment.  Ultimate responsibility for the coding of products/services rests with the individual practitioner. *L5647 and L5652 are not recommended for billing Medicare.

Can you use vacuum with the Air-Lock? No, our Air-Locks are not vacuum locks, they are suction suspension locks.  Our only lock that can be used with a vacuum is the Easy-Off Lock (CD117)

 

Why am I getting a wooshing or squeaking noise? A “wooshing” noise means the socket may be leaking; To Fix: seal the inside of the lock where it touches the socket or you may need to a CQL Auto Expulsion Valve (Part #CD105)

 

A squeaking or clicking noise that repeats with every step, means you may need to add or remove spacers; if the patient is wearing socks, the metal end of the liner may be too long for the recess in the lock and it will ride on the inside of the lock and make the squeaking noise; To Fix: Try using a brass pin or put a P-Lite donut on the end of the liner or use a “Fitting Lock” to adjust spacers.

 

I didn’t have a Housing O-ring in my package, why? Our company determined the Housing O-Ring is not needed; the part is discontinued and not packaged with the Air Lock.

Can I shorten/grind down the Release Button? Yes, as long as you leave it at least ¼” above the edge of the Valve Body

 

What if my patient has difficulty pushing the Release Button? There is a Release Button Cover (CD103RBC) available that can be glued on with a gel-type super glue that provides a larger area for the patient’s hand to push for release. *NOTE-Do not shorten the Release Button less than 7/16” in length if you want to attach the Release Button Cover.

 

Which pins do I use with the Air Lock?

For the Air Lock: 8 Click Pins: CD103P8 or CD103P8H (solid brass)

For the DEEP Air-Lock:  11 Click Pins CD103P11 or CD103P11H (solid brass) *Note: 11-click pins should ONLY be used with the Deep Air Lock; Parts are available to modify locks in existing sockets if the pin is bottoming out in the lock. To modify lock you will need the Guide Pin (CD103GPN) and Pin Cap (CD103PC) and Coyote QUIK Glue.

 

NOTE: Loctite Blue 242 must be used on lock pin threads after determining the appropriate lock pin spacing.

 

How many pin “clicks” should I hear when donning and walking? 2-3 when donning and 5-6 when fully set and ambulating.

Is there a Drop-In Air Lock? Yes, only for “neutral position” The Part number is CD122A – You must also order the Airlock Drop In Fabrication Dummy – CD122AFD.

 

What pin do I use for my Air Lock if my liner has a different thread? If you need a 1/4x20 thread, Order CD103PQ, If you need a 6mm thread, Order CD103PX

 

Can I put a patient over 350lbs in an Air Lock? Yes, our locks are rated and tested to 350lbs, however, the strength is in the lamination and our locks can be used on patients well over 350lbs.

 

 

FITTING LOCKS

Why use a fitting lock? Use a fitting lock to adjust the spacers correctly to ensure the pin is not riding on the bottom of the lock or riding on the inside of the lock. NEVER use a Fitting Lock in a Test or Definitive socket – Their only purpose is for pin adjustments to achieve proper seating.

 

 

PINS

Why use a brass pin versus the standard plastic pin?  The brass pins were introduced to help with strength, wear characteristics and to help with a “squeak” that some patients will notice with plastic pins.  They are stronger, easier to service, and corrosion resistant.

 

SUSPENSION SLEEVES FAQ’S

Do I need a suspension sleeve with a Coyote Lock? A suspension sleeve can help control socket rotation and can always be used as a secondary form of suspension.  If used with an Easy-Off Lock, it can hold vacuum in the socket if dual suspension is used, and will hold suction if used with either the Easy-Off or Air-Lock (in this case, it is recommended to add a valve to the socket as well).

 

MISC. TIPS

Loctite Blue 242 must be used on lock pin threads after determining the appropriate lock pin spacing.

 

 

 

PRODUCT DESCRIPTION

 

CD103 Air-Lock with 8 click Pin

2.5" diameter, 97 grams, 265 weight limit

Dual suspension pin system   Water-resistant   Not for elevated vacuum  Offset alignment in one lamination capability  Easier and more positive pin engagement.

 

CD103S Small Air-Lock with 8 click Pin

1.5" diameter, 48 grams, 265 weight limit

Dual suspension pin system   Water-resistant   Not for elevated vacuum  Offset alignment in one lamination capability  Easier and more positive pin engagement

 

CD103D Deep Air-Lock with 11 click Long Pin

Deeper housing to accept the long pin

Dual suspension pin system   Water-resistant   Not for elevated vacuum  Offset alignment in one lamination capability  Easier and more positive pin engagement

 

CD103SD Deep Small Air-Lock with 11 click Long Pin

Deeper housing to accept the long pin

Dual suspension pin system   Water-resistant   Not for elevated vacuum  Offset alignment in one lamination capability  Easier and more positive pin engagement

 

 

 

For United States product sales please contact one of these distributors.

For international product sales please contact one of these distributors.

United Kingdom

Spain & Portugal

Netherlands

France

Australia & New Zealand

Canada

 

Kanae

Orthopedic Services

 

Italy

Japan

Germany

Norway

INTERNATIONAL

for all countries not listed